MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3a81a90f5208e505850a9c093377b8d4ecceb9b6478abe6b8b1ef601730f1906. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


CoinMiner


Vendor detections: 8


Intelligence 8 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3a81a90f5208e505850a9c093377b8d4ecceb9b6478abe6b8b1ef601730f1906
SHA3-384 hash: 39739ce62f30fe7e10cdd3305f0fd7293382c7da9c70437ff17c8aa641c3929aec6f93591c48543601c4acf556949af9
SHA1 hash: 9dfbff52cdd1326d872352a7f026271a8f8e6ef4
MD5 hash: 68ce8552bd7a128a70efcbd51afa61d7
humanhash: oregon-delta-double-alabama
File name:68ce8552bd7a128a70efcbd51afa61d7
Download: download sample
Signature CoinMiner
Create hunting rule
File size:1'435'146 bytes
First seen:2021-06-25 05:30:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash fc6683d30d9f25244a50fd5357825e79 (92 x Formbook, 52 x AgentTesla, 23 x SnakeKeylogger)
ssdeep 24576:RBXu9HGaVHcPHUHF5WZtdruSjn6jJpcEaipOsSfiIE1:Rw9VHcP0HDWb1uSjnkfcEaiphqG
Threatray 1'025 similar samples on MalwareBazaar
TLSH 546533E18396AC3AC49003B8C4769D41D876ECB9CAE0B7D89565F22DD933346C8B5D2F
Reporter zbetcheckin
Tags:32 CoinMiner exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
221
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
68ce8552bd7a128a70efcbd51afa61d7
Verdict:
Malicious activity
Analysis date:
2021-06-25 05:31:04 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/2c3f1506-6c84-4487-914b-81bd5cd43ec0

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/168204/
Detection(s):
PUA.Win.Packer.Upolyx-12
Create hunting rule

Win.Malware.Autoit-9817447-0
Create hunting rule

Win.Packed.Autoit-9817465-0
Create hunting rule

Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b6016988-6e05-4550-864b-9762f40d131b
Result
Threat name:
Dogecoin Miner
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/807898
Signature
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
AutoIt script contains suspicious strings
Binary is likely a compiled AutoIt script file
Contains functionality to inject code into remote processes
Contains functionality to log keystrokes (.Net Source)
Drops PE files with benign system names
Injects a PE file into a foreign processes
Installs a global keyboard hook
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Process Start Without DLL
Tries to evade analysis by execution special instruction which cause usermode exception
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected Dogecoin Miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 440309 Sample: dCGUa7cXL7 Startdate: 25/06/2021 Architecture: WINDOWS Score: 100 53 Antivirus detection for URL or domain 2->53 55 Antivirus detection for dropped file 2->55 57 Antivirus / Scanner detection for submitted sample 2->57 59 10 other signatures 2->59 7 dCGUa7cXL7.exe 2 3 2->7         started        11 svchost.exe 2->11         started        13 svchost.exe 12 2->13         started        15 6 other processes 2->15 process3 file4 43 C:\Users\user\AppData\Roaming\...\svchost.exe, PE32 7->43 dropped 45 C:\Users\user\...\svchost.exe:Zone.Identifier, ASCII 7->45 dropped 65 Binary is likely a compiled AutoIt script file 7->65 67 Contains functionality to inject code into remote processes 7->67 69 Writes to foreign memory regions 7->69 71 Drops PE files with benign system names 7->71 17 RegAsm.exe 15 2 7->17         started        73 Allocates memory in foreign processes 11->73 75 Injects a PE file into a foreign processes 11->75 21 RegAsm.exe 11->21         started        23 WerFault.exe 13->23         started        25 WerFault.exe 13->25         started        27 WerFault.exe 13->27         started        29 RegAsm.exe 2 15->29         started        31 RegAsm.exe 2 15->31         started        signatures5 process6 dnsIp7 47 7f45fd5539cc4b.ddns.net 136.144.41.164, 49743, 6697 WORLDSTREAMNL Netherlands 17->47 49 dogechain.info 172.67.71.222, 443, 49739, 49741 CLOUDFLARENETUS United States 17->49 51 192.168.2.1 unknown unknown 17->51 61 Installs a global keyboard hook 17->61 33 WerFault.exe 21->33         started        35 WerFault.exe 21->35         started        63 Tries to evade analysis by execution special instruction which cause usermode exception 23->63 37 WerFault.exe 9 29->37         started        39 WerFault.exe 29->39         started        41 WerFault.exe 31->41         started        signatures8 process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3a81a90f5208e505850a9c093377b8d4ecceb9b6478abe6b8b1ef601730f1906/
Threat name:
ByteCode-MSIL.Infostealer.Dcstl
Create hunting rule
Status:
Malicious
First seen:
2021-06-23 13:33:58 UTC
AV detection:
24 of 28 (85.71%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hka2sd2sbdsqlbiktqetg55y2twm5onwi6fl424ld33ac4ypdeda._file
Verdict:
malicious
Similar samples:
10a042914c95c1fdd73931407a209f35f5e88d5f73c044112c2d69ba40e5ef50
CoinMiner
1ea685343aa59dc9e26c132a6fa2f646e8fa64edbb3ca0787465325926e4f96b
CoinMiner
431339fc9aa48f951cd952ad929b63d7fda8c922c1220460da003e8685674f66
CoinMiner
62e9a9522a98f1a4ad322c5ef52fa3187a1204df9455d57766e4b221dc56fd35
CoinMiner
68c944c28e2b06a534175149916e7daaf9a8cb12b09178e89556bcc8337d682f
CoinMiner
9e76f8e208b82a5cc05716fd3cd4508930f9ae44ffc7ff46d7622ed417d97bcf
CoinMiner
def3f8797891579623385136838b1526096afc2bf01f9a08e27aa2073b6d7539
CoinMiner
e1d51f402e88ba4bdb8ae2906a6158ef753c50a7eeae7d8bb5d832a8c7492027
CoinMiner
f27c7f9093a377e3c96f108e7b434d6a5b89e52036b86633ea1334dd8f67dfbb
CoinMiner
f3076b129ca1990de7b828fdb29711a778ae3f0b724edf5ef47a8b229fba0c9a
CoinMiner
+ 1'015 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence upx
Link:
https://tria.ge/reports/210625-af71l5aq7n/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Adds Run key to start application
Unpacked files
SH256 hash:
31abbfcaea7cd9070e4bcbb0d3b303df32e4c31a3ff803666b128a9ba5e56b7e
MD5 hash:
8e86f562c6764881c781562bbcc6192b
SHA1 hash:
f8b39e637f94a1a114a768c5cc2a0914b767d013
Link:
https://www.unpac.me/results/4f11a60e-962a-4c79-804b-feabd9f5ee8e/
SH256 hash:
704d1eb74933555400de5fd053b44b0192661ec5b956d268f1446a0bca3a4854
MD5 hash:
4758e77876de2911a0b053bda8f4fb4b
SHA1 hash:
44168d7e9a6c4e34604e15ca6838d3cbc42227b9
Link:
https://www.unpac.me/results/4f11a60e-962a-4c79-804b-feabd9f5ee8e/
SH256 hash:
3a81a90f5208e505850a9c093377b8d4ecceb9b6478abe6b8b1ef601730f1906
MD5 hash:
68ce8552bd7a128a70efcbd51afa61d7
SHA1 hash:
9dfbff52cdd1326d872352a7f026271a8f8e6ef4
Link:
https://www.unpac.me/results/4f11a60e-962a-4c79-804b-feabd9f5ee8e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/3a81a90f5208e505850a9c093377b8d4ecceb9b6478abe6b8b1ef601730f1906

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:ccrewQAZ
Create hunting rule
Author:AlienVault Labs
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Stealer_word_in_memory
Create hunting rule
Author:James_inthe_box
Description:The actual word stealer in memory
Rule name:suspicious_packer_section
Create hunting rule
Author:@j0sm1
Description:The packer/protector section names/keywords
Reference:http://www.hexacorn.com/blog/2012/10/14/random-stats-from-1-2m-samples-pe-section-names/

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

CoinMiner

Executable exe 3a81a90f5208e505850a9c093377b8d4ecceb9b6478abe6b8b1ef601730f1906

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/168204/
  
URLhaus
https://urlhaus.abuse.ch/url/1380559/

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